28386820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18433}}^1$

素因数の和:18460

約数の個数: 48

約数和(自身を含む): 74325888

約数和(自身を除く): 45939068

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18433, 36866, 73732, 92165, 129031, 184330, 202763, 258062, 368660, 405526, 516124, 645155, 811052, 1013815, 1290310, 1419341, 2027630, 2580620, 2838682, 4055260, 5677364, 7096705, 14193410, 28386820]

約数ペア:

[(1, 28386820), (2, 14193410), (4, 7096705), (5, 5677364), (7, 4055260), (10, 2838682), (11, 2580620), (14, 2027630), (20, 1419341), (22, 1290310), (28, 1013815), (35, 811052), (44, 645155), (55, 516124), (70, 405526), (77, 368660), (110, 258062), (140, 202763), (154, 184330), (220, 129031), (308, 92165), (385, 73732), (770, 36866), (1540, 18433)]